Seiko Cal. 4576 - 683

The Seiko 4576-683 represents an important milestone in Seiko's 1973 lineup. Powered by the 4576 caliber with 18j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-d4eafd0ca4c5]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1973

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